Flashing



April 13, 1937- I H. w.' HARRlss 2,076,990

AILS'IIIlG l Filed Aug. `18, 1952 2 Sheets-Sheet 1 met 2.

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ENTOR W. Harris# ATTORNEY Plil 13, l937- H. w. HARRlss 21,076,990

' FLASHING l Filed Aug. 18, 1932 z shts-sneet 2 FIC-L. 5.

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INVENTOR .Hen rj W Harris?,

BY a. 1% k ATTORNEY Patented pr. 13, i937' PATENT oFFieE FLASHING Henry W. Harriss, Baltimore, Md., assignor, by mesne assignments, to The Cheney Company, Winchester, Mass., a corporation of Massachusetts Application August 18,

13 Claims.

The present invention relates to flashing, and

more particularly to that type of flashing which is adapted to be embedded, in sheet form, in the mortar between the courses of brick of a masonry wall and which are adapted to substantially interlock and key the mortar above the sheet of flashing to that therebeneath, as well as to prevent movement Vbetween the mortar and the flashing in substantially every direction.

`In the copending application of Wm. A. Fingles, Jr., Serial No. 623,441, led July 19, 1932, there is disclosed a ilashing construction which comprises essentially a plurality oi spaced transversely extending overhanging ribs of substan- 15 tially Z- or S-shaped cross-section and additional projections or deformations extending upwardly from the body of the metal intermediate the aforedescribed ribs. The reentrant recesses formed by the transverse Z-shaped ribs bond the mortar on each side of the flashing, so that relative vertical and longitudinal movement between the ilashing and the mortar (before the latter hardens) is rendered impossible. The additional projections hold the flashing against relative transverse movement with respect to the mortar. 'I'he result is that movement between the mortar and the flashing is prevented in substantially every direction. Y

According to the present invention, the flashing sheet is formed with a plurality of sets of ribs of such construction and relationship to the sheet that relative movement `therebetween and a layer of mortar in which it may be embedded is impossible in substantially every direction without the necessity of providing the additional movement preventing means or projections as in the prior construction hereinbefore described. In otherwords, the ribs according to the present invention severally simultaneously exercise multiple functions, namely, they substantially prevent (l) relative vertical movement, (2) relative longitudinal movement, and (3) relative transverse movement between the flashing and coacting ashing. v

Advantageously the invention comprises the provision of a plurality of ribs in a through-wall flashing, which ribs may be straight, angular or sinuous and may be so obliquely disposed with reference to the marginal edges of the sheet that 50 portions Vof adjacent ribs or ofany singlerib,

as the case may be, will be in transverse alinement so that 'mortar molded into the grooved portions of the sheet will lie between such transverse alined `ribbed portion 'that the adjacent 55 courses of masonry will be bonded together efi932, serial No. 629,380 (o1. 'z2- 427) fectively against transverse shifting movement.

Several embodiments of the invention are illustrated, by way of example, on the accompanying sheet of drawings wherein Fig. l is a perspective view, somewhat diagrammatically, of a portion of a wall constructionwith a sheet of ilashing incorporated therein, portions of the wall and ilashing being broken away for the sake of clearness;

Fig. 2 is a sectional view through a portion of a wall construction and one formy of flashing incorporated therein;

Fig. 3 is a view corresponding to Fig. 2, illustrating another type of flashing; 1

Figs. 4 to l2, inclusive, are severallytop plan somewhat diagrammatic views of various configurations of interlocking ribs, according to the present invention.

Similar reference characters designate corresponding parts throughout the several figures of drawings.

Referring to the drawingsin detail, and more particularly at rst to Fig. l thereof, reference numeral l@ represents a brick wall or other similar masonry construction in which a sheet of liashing Il constructed according to the present invention is embedded for the purpose of deflecting moisture which may tend to seep into the building construction of which the wall l0 is a portion.

As is shown on the drawings, the flashing sheet il is preferably embedded in a layer of mortar I2 or the like which is disposed between the several courses of brick I3.

The embodiment of flashing sheet illustrated in Fig. 1 consists essentially of a sheet of metal, preferably copper or the like, which is deformed to provide a series of obliquely disposed, substantially equidistantly spaced,parallel overhanging ribs M which extend substantially transversely across the entire sheet of metal. Alternate ribs I4 may overhang in opposite directions whereby they dene a longitudinal series of alternately disposed ridges andgrooves which are dovetail shaped in cross section.

In applying the flashing to the wall lll, a portion of the layer of mortar in which the flashingis to be embedded is first laid. The flashing sheet is then placed upon the fresh mortar, whereby the downwardly projecting ridges extend thereinto while the downwardly opening grooves are lled thereby.

The ashing is laid in strips which may be several feetlong. It is accordingly desirable that a strip, once laid, remain in its proper position so that the next adjacent strip may be correctly aligned therewith and joined thereto.

The obliquely disposed grooves and ridges are adapted to prevent the flashing from moving with respect to the layer of mortar therebeneath, transversely and longitudinally of the wall as well as in substantially every other horizontal direction, whereby displacement of a strip of flashing, once laid, is substantially impossible.

The dovetail character of the ridges and grooves effects an interlocking of the mortar below the flashing strip with that thereabove, after the latter is duly laid. Due to the inability of mortar to effectively adhere to copper, the ordinary sheet of flashing breaks the bond between the mortar thereabove and therebelow, making it theoretically possible to lift the portion of the wall above the fiashing'from the remainder of the construction. The overhanging ribs, lll, however, interlock the mortar on each side of the flashing so that, in effect, the mortar bond is not broken, and the wall is rendered continuous instead of discontinuous.

The flashing may be provided with a downwardly bent apron or the like l5 which projects from the layer of mortar, and is adapted to be associated in conventional manner with roof flashing, base flashing or the like.

Instead of having alternate overhanging ribs ld extend in opposite directions, they may be severally parallel, as shown at l5 in Fig. 3, whereby a section through the sheet is substantially sawtooth-shaped in character. The reentrant recesses defined on each side of the r ribs l5 prevent relative vertical movement between the flashing and mortar.

In Fig. 4, a modified form of the invention is shown which differs from that heretofore described in that the ribs are disposed in a plurality of sets of oblique disposed parallel pairs, and in a direction opposite to that shown in Fig. 1.

The ribs lli, according to Fig. 5, each comprise two portions which extend obliquely in opposite directions whereby substantially V-shaped ribs are formed. As a result of this arrangement and the overhanging character of the ribs, this form of the invention positively prevents relative movement between the mortar and embedded flashing in every direction.

The embodiment shown in Fig. 6 differs from that of Fig. 5 only in that the several ribs I4 are substantially Z-shaped instead of V-shaped in character.

The overhanging ribs lli, in the modification illustrated in Fig. '7, are formed in the shape of parallel arcs, whereby they are likewise adapted to effect the several functions effected by the ribs of the configurations heretofore described.

The form shown in Fig. 8 consists of overhanging parallel ribs i4 which are substantially S-shaped in plan, extending directly across the flashing.

The overhanging ribs shown in Fig. 9 resemble those of Fig. 1 except that one end thereof is somewhat curved, whereby movement of the flashing in every horizontal direction with respect to the mortar is prevented.

In Fig. 10, the overhanging ribs are of elongated sinuous form, instead of being rectilinear as in Fig. 1.

Fig. 1l illustrates still another embodiment of the invention. This differs from that of Fig. 8 only in that alternate ribs I4, instead of adjacent ribs, are parallel, intermediate ribs being of complementary configuration.

It will be seen from the' foregoing description that applicant provides his flashing with integral means extending thereacross which has the multiple function of simultaneously preventing relative vertical, longitudinalr and transverse movement therebetween and the coacting layer of mortar or like binding material.

It will be understood that the relative distance between adjacent ribs may be varied as desired, and that the ribs may be formed as shown in Fig. 2 (defining dovetail shaped ridges therebetween) or as shown in Fig. 3 (both of which shapes I designate under the broad character of dovetail shaped ribs or corrugations), or in other equivalent manner.

While the invention has been described in some detail in connection with numerous embodiments of the invention, these are intended to be merely illustrative of the invention, and it is not inten-ded to limit the scope of the invention thereby or otherwise than by the scope of the appended claims.

What is claimed is:

1. A through-wall flashing for masonry construction comprising a metal sheet of desired width to extend substantially through a masonry Wall and be imbedded in a mortar joint thereof, Said sheet being provided with a plurality of dovetail shaped rib and groove sections obliquely disposed with reference to the marginal edges of the sheet, the oblique disposition of the rib sections being such that portions of adjacent rib sections are in transverse alignment providing areas of mortar throughout the length of the sheet are conned between transversely aligned rib sections whereby to effectively bond the adjacent courses of masonry together against movement in all directions.

2. A through-wall flashing for masonry oonstruction comprising a metal sheet of desired width to extend substantially through a masonry wall and be imbedded in a mortar joint thereof, said sheet being provide-d with a plurality of parallel sided rib and groove sections obliquely disposed with reference to the marginal edges of the sheet said rib sections having at least one undercut side, the oblique disposition of the rib sections being such that portions of adjacent sections are in transverse alignment so that areas of mortar throughout the length of the sheet are confined between transversely aligned rib sections whereby to effectively bond the adjacent courses of masonry together against movement in all directions.

3. A through-wall flashing for masonry construction compn'sing a metal sheet of desired width to extend substantially through a masonry wall and be imbedded in a mortar joint thereof, said sheet being provided with a plurality of straight dovetail shaped rib and groove sections obliquely disposed with reference to the marginal edges of the sheet, the oblique disposition of the rib sections being such that portions of adjacent rib sections are in transverse alignment so that areas of mortar throughout the length of the sheet are confined between transversely aligned rib sections whereby to effectively bond the adjacent courses of masonry together against movement in all directions.

4. A through-wall flashing for masonry construction comprising a metal sheet of desired width to extend substanially through a masonry wall and be embedded in a mortar joint thereof,

` rib sections whereby to eireetivdy bond the aa- `lo jacent courses of masonry together against movement in all directions.

5. A through-wall hashing for masonry structures comprising a rectangular metal sheet providedwith shallow dovetail shaped corrugations l having parallel side walls and disposed obliquely crosswise of thesheet, presenting through the length of the sheet and between adjacent corrugations a plurality of grooved areas into which mortar may be molded and conhne'd between transversely aligned raised sections to eiectively prevent relative movement of the adjacent courses of maso-nry transversely of the sheet.

6. A through-wall hashing for masonry structures comprising a. rectangular metal sheet provided with a plurality of sinuous shallow corrugations having parallel side walls and disposed obliquely crosswise of the sheet, presenting through the length of the sheet and between adjacent corrugations a plurality of grooved areas into which mortar may be molded and conhned between transversely aligned raised sections to effectively prevent relative movement of the adjacent courses of masonry transversely of the sheet.

7. A through-wall flashing for masonry structures comprising a rectangular metal sheet provided with angular shallow dovetail shaped corrugations having parallel side walls and disposed obliquely crosswise of the sheet, presenting through the length of the sheet a plurality of transversely of the sheet.

8. A through-wall hashing for masonry structures comprising a rectangular metal sheet provided with zig-.tagged shallow dovetailed shaped corrugations having parallel side walls and disposed obliquely crosswise of the sheet, presenting through the length of the sheet a plurality of grooved areas into which mortar may be molded and confined between transversely aligned raised sections to effectively prevent relative movement of the adjacent courses of masonry transversely of the sheet.

9. A through-wall hashing for masonry Structures and the like comprising a sheet of metal deformed to provide a plurality of angular shaped corrugations extending transversely of the sheet between which mortar may be molded to efiectively prevent relative shifting of adjacent courses of masonry transversely and longitudinally of the sheet, said corrugations being substantially crescent-shaped from end to end and being curved in a continuous direction only.

10. A through-wall flashing for masonry structures and the like comprising a sheet of metal deformed to provide a plurality of sinuously shaped corrugations extending transversely of the sheet between which mortar may be mol-ded to effectively prevent shifting of adjacent courses of masonry transversely and longitudinally of the sheet, said corrugations being substantially crescent-shaped from end to end and being curved in a continuous direction only.

11. A through-wall hashing for masonry structures and the like comprising a sheet of metal deformed to provide a plurality of spaced parallel sided dovetail shaped rib sections, a portion of certain of said rib sections being angularly disposed with respect to adjacent portions, whereby when mortar is molded between adjacent rib sections, adjacent courses of masonry will be effectively bonded to the hashing against shifting transversely thereof.

12. A hashing as dehned in claim 1l in which the rib sections are V-shaped.

13. A hashing as dehned in claim 11 in which the rib sections are Z-shaped.

HENRY W. HARRISS. 

